How to cut video using ffmpeg

You can cut a piece of video from a bigger video like this.

ffmpeg -ss 00:00:30 -t 00:00:05 -i source_video -vcodec copy -acodec copy newfilename 

skype 4.2 j on debian wheezy behind proxy

The new skype 4.2 on linux machines do not offer a configuration screen when you start it for the first time. If you are behind a proxy, you  are stuck.
 Here is the quick solution.
  Start skype. The EULA screen will come up. Accept it (at your own risk). The skype log in screen will come up.  Press Cntrol + O . The configuration screen will come up.

Skype on debian Wheezy amd 64

Here are is what I did for installing skype on debian wheezy 64 bit.

 1) Enable 32 bit repositories
  

# dpkg --add-architecture i386
# apt-get update

 2 Install  libpulse from i386 repository

   
# apt-get install libpulse0:i386

Download skype from skype.com. Choose debian wheezy package (multiartch) 

# dpkg -i skype-debian_4.2.0.11-1_i386.deb

The package will fail to configure.

Install the dependencies by 

 #apt-get install -f

Done :)